With the midsummer credit crunch taking its toll, 2007 turned into a bleak year for the world’s big financial institutions, and 2008 may not be much better. As executives respond to the immediate pressures, however, they should maintain a clear perspective on the long-term outlook, which in our view is considerably brighter. Despite the current correction, we believe that during the next ten years the growth rate of the global banking industry will exceed that of GDP. Driven by powerful basic trends, such as demographics and the math of wealth accumulation, the industry will likely more than double its revenues and profits over the period.

Just as strikingly, McKinsey research also indicates that the industry’s patterns of growth will be diverse and uneven. Our comprehensive analysis of data since 2000 suggests that banking is one of the global economy’s few large industries that isn’t rapidly converging around a single structure or following the same market dynamics everywhere. Indeed, banking’s revenue performance has varied sharply and unexpectedly within regions, countries, subsectors, and product groups—and will continue to do so.

More than in other major industries, it appears, long-term success in banking hangs on being in the right place at the right...